After 63 anything Radio King has that strainer. Before that, The hookless "S' badge with that throw, I would not have issues calling it a Radio King. The term Super Gene Krupa, is cataloged (55) as Radio King with Clamshell throws too. To this day I can call a Ludwig DeLuxe a BB, and my 98 GMC a Chevy. Maybe Buddy Rich had a role in Slingerland ditching the name for a spell.
That is too bad. The facts speak for themselves. One could tolerate the disregard for detail on some random social site, but here on the Vintage Drum Forum? Sad. Perpetuating this kind of misinformation is probably what caused the OP to be in the situation he is in.